Forum Discussion
Helper IDebug tools for M Code
Hi RT8
Thank you for reaching out to the Microsoft Fabric Community Forum.
Power Query (M) does not have a traditional debugger, but it provides powerful built-in tools and techniques to debug effectively.
To troubleshoot complex M code:
- Use intermediate steps in the Advanced Editor to inspect outputs step-by-step.
- Apply the try...otherwise expression to catch and isolate errors.
- Use Diagnostics.Trace to log values during execution, especially in recursive or nested functions.
When working with complex or recursive logic:
- Consider using List.Accumulate as a more efficient and readable alternative to recursion, especially for large datasets.
- As suggested by lbendlin , List.Generate can also be a powerful approach for building iterative logic in a controlled manner.
If this response resolves your query, please mark it as the Accepted Solution to assist other community members. A Kudos is also appreciated if you found the response helpful.
Thank You!
Community SupportHi RT8
Thank you for reaching out to the Microsoft Fabric Community Forum.
Power Query (M) does not have a traditional debugger, but it provides powerful built-in tools and techniques to debug effectively.
To troubleshoot complex M code:
- Use intermediate steps in the Advanced Editor to inspect outputs step-by-step.
- Apply the try...otherwise expression to catch and isolate errors.
- Use Diagnostics.Trace to log values during execution, especially in recursive or nested functions.
When working with complex or recursive logic:
- Consider using List.Accumulate as a more efficient and readable alternative to recursion, especially for large datasets.
- As suggested by lbendlin , List.Generate can also be a powerful approach for building iterative logic in a controlled manner.
If this response resolves your query, please mark it as the Accepted Solution to assist other community members. A Kudos is also appreciated if you found the response helpful.
Thank You!
RT8Where this does not solve my problem these are good suggestions and I will take them up. Thanks for your time in responding to my question
- v-karpurapud
Hi RT8
If Debug tools for M Code important for your use case, it’s recommended to submit feedback via Microsoft Fabric Ideas so that it can be considered for future updates. If many customers demand this feature, Microsoft will prioritize it and work on rolling it out soon. I hope your issue gets resolved quickly.
Thank You!
- RT8
That is a great idea. Thanks for the suggestion. I have submitted this idea.